regl-render: swap n blit
git-svn-id: svn://kolibrios.org@4498 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
Sergey Semyonov (Serge)
parent
5e9c271f01
commit
05df377e5f
@ -14,28 +14,51 @@
|
||||
#include <kos32sys.h>
|
||||
#include <pixlib2.h>
|
||||
|
||||
enum px_buffer
|
||||
{
|
||||
PX_FRONT = 0,
|
||||
PX_BACK = 1
|
||||
};
|
||||
|
||||
struct render
|
||||
{
|
||||
EGLDisplay dpy;
|
||||
EGLContext context;
|
||||
GLuint framebuffer;
|
||||
EGLImageKHR front, back, screen;
|
||||
GLuint tx_buffers[2];
|
||||
GLuint tx_screen;
|
||||
int back_buffer;
|
||||
GLuint blit_prog;
|
||||
GLint sampler;
|
||||
float vertices[8], texcoords[8];
|
||||
};
|
||||
|
||||
|
||||
EGLImageKHR px_create_image(EGLDisplay display, EGLContext context,
|
||||
int width, int height, int stride, int name);
|
||||
GLuint create_framebuffer(int width, int height, GLuint *tex);
|
||||
GLint create_shader(GLenum type, const char *source);
|
||||
struct render* create_render(EGLDisplay dpy, EGLSurface surface);
|
||||
void blit_texture(struct render *render, GLuint tex, int x, int y, int w, int h);
|
||||
void render_swap_buffers(struct render *render, int x, int y, int w, int h);
|
||||
|
||||
int main()
|
||||
{
|
||||
struct gbm_device *gbm;
|
||||
struct gbm_surface *gs;
|
||||
struct render *render;
|
||||
|
||||
EGLDisplay dpy;
|
||||
EGLint major, minor;
|
||||
|
||||
EGLContext context;
|
||||
EGLSurface surface;
|
||||
EGLImageKHR front,fb_image;
|
||||
|
||||
EGLConfig config;
|
||||
|
||||
EGLint config_attribs[32];
|
||||
EGLint num_configs, i;
|
||||
GLuint texture, buffer;
|
||||
GLuint f_tex;
|
||||
|
||||
int fd;
|
||||
|
||||
@ -85,13 +108,10 @@ int main()
|
||||
|
||||
gs = gbm_surface_create(gbm, 400, 300, GBM_BO_FORMAT_ARGB8888, GBM_BO_USE_RENDERING);
|
||||
|
||||
|
||||
BeginDraw();
|
||||
DrawWindow(20, 20, 400+9, 300+24, "gl-render", 0x000000, 0x74);
|
||||
EndDraw();
|
||||
|
||||
sna_create_mask();
|
||||
|
||||
surface = eglCreateWindowSurface(dpy,config, (EGLNativeWindowType)gs, NULL);
|
||||
if (surface == EGL_NO_SURFACE)
|
||||
printf("failed to create surface");
|
||||
@ -100,13 +120,6 @@ int main()
|
||||
printf("failed to make window current");
|
||||
|
||||
|
||||
front = eglGetBufferImage(dpy, surface, EGL_DRM_BUFFER_BACK);
|
||||
glGenTextures(1, &f_tex);
|
||||
glBindTexture(GL_TEXTURE_2D, f_tex);
|
||||
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_NEAREST);
|
||||
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_NEAREST);
|
||||
glEGLImageTargetTexture2DOES(GL_TEXTURE_2D,front);
|
||||
glBindTexture(GL_TEXTURE_2D, 0);
|
||||
|
||||
glMatrixMode(GL_PROJECTION);
|
||||
glLoadIdentity();
|
||||
@ -134,191 +147,16 @@ int main()
|
||||
|
||||
glFlush();
|
||||
|
||||
glBindFramebuffer(GL_FRAMEBUFFER, 0);
|
||||
asm volatile ("int3");
|
||||
|
||||
if(fd)
|
||||
{
|
||||
int ret;
|
||||
GLenum status;
|
||||
struct drm_i915_fb_info fb;
|
||||
|
||||
memset(&fb, 0, sizeof(fb));
|
||||
ret = drmIoctl(fd, SRV_FBINFO, &fb);
|
||||
if( ret != 0 )
|
||||
printf("failed to get framebuffer info\n");
|
||||
|
||||
fb_image = px_create_image(dpy,context,fb.width,fb.height,
|
||||
fb.pitch,fb.name);
|
||||
|
||||
printf("fb_image %p\n", fb_image);
|
||||
|
||||
glGenTextures(1, &texture);
|
||||
glBindTexture(GL_TEXTURE_2D, texture);
|
||||
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_NEAREST);
|
||||
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_NEAREST);
|
||||
|
||||
glEGLImageTargetTexture2DOES(GL_TEXTURE_2D,fb_image);
|
||||
glBindTexture(GL_TEXTURE_2D, 0);
|
||||
|
||||
glGenFramebuffers(1, &buffer);
|
||||
glBindFramebuffer(GL_FRAMEBUFFER, buffer);
|
||||
glFramebufferTexture2D(GL_FRAMEBUFFER,
|
||||
GL_COLOR_ATTACHMENT0,
|
||||
GL_TEXTURE_2D, texture,0);
|
||||
status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
|
||||
if (status != GL_FRAMEBUFFER_COMPLETE)
|
||||
{
|
||||
const char *str;
|
||||
switch (status)
|
||||
{
|
||||
case GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT:
|
||||
str = "incomplete attachment";
|
||||
break;
|
||||
case GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT:
|
||||
str = "incomplete/missing attachment";
|
||||
break;
|
||||
case GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER:
|
||||
str = "incomplete draw buffer";
|
||||
break;
|
||||
case GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER:
|
||||
str = "incomplete read buffer";
|
||||
break;
|
||||
case GL_FRAMEBUFFER_UNSUPPORTED:
|
||||
str = "unsupported";
|
||||
break;
|
||||
case GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE:
|
||||
str = "incomplete multiple";
|
||||
break;
|
||||
default:
|
||||
str = "unknown error";
|
||||
break;
|
||||
}
|
||||
|
||||
printf("destination is framebuffer incomplete: %s [%#x]\n",
|
||||
str, status);
|
||||
}
|
||||
}
|
||||
|
||||
glViewport(0, 0, 1024, 768);
|
||||
render = create_render(dpy, surface);
|
||||
glViewport(0, 0, 1024, 768);
|
||||
glMatrixMode(GL_PROJECTION);
|
||||
glLoadIdentity();
|
||||
glMatrixMode(GL_MODELVIEW);
|
||||
glLoadIdentity();
|
||||
|
||||
|
||||
const char *vs_src =
|
||||
"attribute vec4 v_position;\n"
|
||||
"attribute vec4 v_texcoord0;\n"
|
||||
"varying vec2 source_texture;\n"
|
||||
"void main()\n"
|
||||
"{\n"
|
||||
" gl_Position = v_position;\n"
|
||||
" source_texture = v_texcoord0.xy;\n"
|
||||
"}\n";
|
||||
|
||||
const char *fs_src =
|
||||
// "precision mediump float;\n"
|
||||
"varying vec2 source_texture;\n"
|
||||
"uniform sampler2D sampler;\n"
|
||||
"void main()\n"
|
||||
"{\n"
|
||||
" vec3 cg = texture2D(sampler, source_texture).rgb;\n"
|
||||
" gl_FragColor = vec4(cg.r,cg.g,cg.b,1.0);\n"
|
||||
"}\n";
|
||||
|
||||
GLuint blit_prog;
|
||||
GLint vs_shader, fs_shader;
|
||||
|
||||
asm volatile ("int3");
|
||||
|
||||
blit_prog = glCreateProgram();
|
||||
vs_shader = create_shader(GL_VERTEX_SHADER,vs_src);
|
||||
fs_shader = create_shader(GL_FRAGMENT_SHADER, fs_src);
|
||||
glAttachShader(blit_prog, vs_shader);
|
||||
glAttachShader(blit_prog, fs_shader);
|
||||
glBindAttribLocation(blit_prog, 0, "v_position");
|
||||
glBindAttribLocation(blit_prog, 1, "v_texcoord0");
|
||||
|
||||
GLint ok;
|
||||
|
||||
glLinkProgram(blit_prog);
|
||||
glGetProgramiv(blit_prog, GL_LINK_STATUS, &ok);
|
||||
if (!ok) {
|
||||
GLchar *info;
|
||||
GLint size;
|
||||
|
||||
glGetProgramiv(blit_prog, GL_INFO_LOG_LENGTH, &size);
|
||||
info = malloc(size);
|
||||
|
||||
glGetProgramInfoLog(blit_prog, size, NULL, info);
|
||||
printf("Failed to link: %s\n", info);
|
||||
printf("GLSL link failure\n");
|
||||
}
|
||||
|
||||
GLint sampler;
|
||||
float vertices[8], texcoords[8];
|
||||
GLfloat dst_xscale, dst_yscale; //, src_xscale, src_yscale;
|
||||
int l, t, r, b, stride;
|
||||
|
||||
sampler = glGetUniformLocation(blit_prog,"sampler");
|
||||
glUseProgram(blit_prog);
|
||||
glUniform1i(sampler, 0);
|
||||
|
||||
glVertexAttribPointer(0, 2, GL_FLOAT,GL_FALSE, 2 * sizeof(float),vertices);
|
||||
glEnableVertexAttribArray(0);
|
||||
|
||||
glActiveTexture(GL_TEXTURE0);
|
||||
glBindTexture(GL_TEXTURE_2D, f_tex);
|
||||
glTexParameteri(GL_TEXTURE_2D,
|
||||
GL_TEXTURE_MIN_FILTER,
|
||||
GL_NEAREST);
|
||||
glTexParameteri(GL_TEXTURE_2D,
|
||||
GL_TEXTURE_MAG_FILTER,
|
||||
GL_NEAREST);
|
||||
|
||||
glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 2 * sizeof(float),texcoords);
|
||||
glEnableVertexAttribArray(1);
|
||||
|
||||
dst_xscale = 1.0/1024;
|
||||
dst_yscale = 1.0/768;
|
||||
// src_xscale = 1.0/400;
|
||||
// src_yscale = 1.0/300;
|
||||
|
||||
stride = 2;
|
||||
|
||||
l = 20;
|
||||
t = 20;
|
||||
r = l+400;
|
||||
b = t+300;
|
||||
|
||||
float t0, t1, t2, t5;
|
||||
|
||||
vertices[0] = t0 = 2*l*dst_xscale - 1.0;
|
||||
vertices[1 * 2] = t2 = 2*r*dst_xscale - 1.0;
|
||||
|
||||
vertices[2 * 2] = t2;
|
||||
vertices[3 * 2] = t0;
|
||||
|
||||
vertices[1] = t1 = 2*t*dst_yscale - 1.0;
|
||||
vertices[2*2+1] = t5 = 2*b*dst_yscale - 1.0;
|
||||
vertices[1*2+1] = t1;
|
||||
vertices[3*2+1] = t5;
|
||||
|
||||
texcoords[0] = 0.0;
|
||||
texcoords[1] = 0.0;
|
||||
texcoords[1*2] = 1.0;
|
||||
texcoords[1*2+1]= 0.0;
|
||||
texcoords[2*2] = 1.0;
|
||||
texcoords[2*2+1]= 1.0;
|
||||
texcoords[3*2] = 0.0;
|
||||
texcoords[3*2+1]= 1.0;
|
||||
|
||||
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
|
||||
|
||||
glDisableVertexAttribArray(0);
|
||||
glDisableVertexAttribArray(1);
|
||||
glDisable(GL_TEXTURE_2D);
|
||||
glUseProgram(0);
|
||||
render_swap_buffers(render, 20, 20, 400, 300);
|
||||
|
||||
glFinish();
|
||||
eglMakeCurrent(dpy, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
|
||||
@ -380,29 +218,375 @@ EGLImageKHR px_create_image(EGLDisplay display, EGLContext context,
|
||||
GLint create_shader(GLenum type, const char *source)
|
||||
{
|
||||
GLint ok;
|
||||
GLint prog;
|
||||
GLint shader;
|
||||
|
||||
prog = glCreateShader(type);
|
||||
glShaderSource(prog, 1, (const GLchar **) &source, NULL);
|
||||
glCompileShader(prog);
|
||||
glGetShaderiv(prog, GL_COMPILE_STATUS, &ok);
|
||||
shader = glCreateShader(type);
|
||||
if(shader == 0)
|
||||
goto err;
|
||||
|
||||
glShaderSource(shader, 1, (const GLchar **) &source, NULL);
|
||||
glCompileShader(shader);
|
||||
glGetShaderiv(shader, GL_COMPILE_STATUS, &ok);
|
||||
if (!ok) {
|
||||
GLchar *info;
|
||||
GLint size;
|
||||
|
||||
glGetShaderiv(prog, GL_INFO_LOG_LENGTH, &size);
|
||||
glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &size);
|
||||
info = malloc(size);
|
||||
|
||||
glGetShaderInfoLog(prog, size, NULL, info);
|
||||
glGetShaderInfoLog(shader, size, NULL, info);
|
||||
printf("Failed to compile %s: %s\n",
|
||||
type == GL_FRAGMENT_SHADER ? "FS" : "VS",info);
|
||||
printf("Program source:\n%s", source);
|
||||
printf("GLSL compile failure\n");
|
||||
free(info);
|
||||
glDeleteProgram(shader);
|
||||
shader = 0;
|
||||
}
|
||||
|
||||
return prog;
|
||||
err:
|
||||
return shader;
|
||||
}
|
||||
|
||||
|
||||
struct render* create_render(EGLDisplay dpy, EGLSurface surface)
|
||||
{
|
||||
const char *vs_src =
|
||||
"attribute vec4 v_position;\n"
|
||||
"attribute vec4 v_texcoord0;\n"
|
||||
"varying vec2 source_texture;\n"
|
||||
"void main()\n"
|
||||
"{\n"
|
||||
" gl_Position = v_position;\n"
|
||||
" source_texture = v_texcoord0.xy;\n"
|
||||
"}\n";
|
||||
|
||||
const char *fs_src =
|
||||
// "precision mediump float;\n"
|
||||
"varying vec2 source_texture;\n"
|
||||
"uniform sampler2D sampler;\n"
|
||||
"void main()\n"
|
||||
"{\n"
|
||||
" vec3 cg = texture2D(sampler, source_texture).rgb;\n"
|
||||
" gl_FragColor = vec4(cg.r,cg.g,cg.b,1.0);\n"
|
||||
"}\n";
|
||||
EGLint config_attribs[14];
|
||||
EGLConfig config;
|
||||
EGLint num_configs;
|
||||
|
||||
EGLContext context;
|
||||
|
||||
struct drm_i915_fb_info fb;
|
||||
GLint vs_shader, fs_shader;
|
||||
GLenum status;
|
||||
GLint ret;
|
||||
int fd;
|
||||
struct render *render;
|
||||
|
||||
|
||||
|
||||
fd = get_service("DISPLAY");
|
||||
|
||||
memset(&fb, 0, sizeof(fb));
|
||||
ret = drmIoctl(fd, SRV_FBINFO, &fb);
|
||||
if( ret != 0 )
|
||||
{ printf("failed to get framebuffer info\n");
|
||||
goto err;
|
||||
};
|
||||
|
||||
render = (struct render*)malloc(sizeof(struct render));
|
||||
if(render == NULL)
|
||||
goto err;
|
||||
|
||||
render->dpy = dpy;
|
||||
|
||||
render->front = eglGetBufferImage(dpy, surface, EGL_DRM_BUFFER_FRONT);
|
||||
if(render->front == EGL_NO_IMAGE_KHR)
|
||||
goto err1;
|
||||
|
||||
render->back = eglGetBufferImage(dpy, surface, EGL_DRM_BUFFER_BACK);
|
||||
if( render->back == EGL_NO_IMAGE_KHR)
|
||||
goto err2;
|
||||
|
||||
glGenTextures(2, render->tx_buffers);
|
||||
if(glGetError() != GL_NO_ERROR)
|
||||
goto err3;
|
||||
|
||||
glBindTexture(GL_TEXTURE_2D, render->tx_buffers[EGL_DRM_BUFFER_FRONT]);
|
||||
if(glGetError() != GL_NO_ERROR)
|
||||
goto err4;
|
||||
|
||||
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_NEAREST);
|
||||
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_NEAREST);
|
||||
glEGLImageTargetTexture2DOES(GL_TEXTURE_2D,render->front);
|
||||
if(glGetError() != GL_NO_ERROR)
|
||||
goto err4;
|
||||
|
||||
glBindTexture(GL_TEXTURE_2D, render->tx_buffers[EGL_DRM_BUFFER_BACK]);
|
||||
if(glGetError() != GL_NO_ERROR)
|
||||
goto err4;
|
||||
|
||||
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_NEAREST);
|
||||
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_NEAREST);
|
||||
glEGLImageTargetTexture2DOES(GL_TEXTURE_2D,render->back);
|
||||
if(glGetError() != GL_NO_ERROR)
|
||||
goto err4;
|
||||
|
||||
glBindTexture(GL_TEXTURE_2D, 0);
|
||||
|
||||
render->back_buffer = EGL_DRM_BUFFER_BACK;
|
||||
|
||||
context = eglGetCurrentContext();
|
||||
|
||||
config_attribs[0] = EGL_RED_SIZE;
|
||||
config_attribs[1] = 1;
|
||||
config_attribs[2] = EGL_GREEN_SIZE;
|
||||
config_attribs[3] = 1;
|
||||
config_attribs[4] = EGL_BLUE_SIZE;
|
||||
config_attribs[5] = 1;
|
||||
config_attribs[6] = EGL_DEPTH_SIZE;
|
||||
config_attribs[7] = 1;
|
||||
|
||||
config_attribs[8] = EGL_SURFACE_TYPE;
|
||||
config_attribs[9] = EGL_WINDOW_BIT;
|
||||
|
||||
config_attribs[10] = EGL_RENDERABLE_TYPE;
|
||||
config_attribs[11] = EGL_OPENGL_BIT;
|
||||
config_attribs[12] = EGL_NONE;
|
||||
|
||||
if (!eglChooseConfig(dpy,config_attribs, &config, 1, &num_configs) || !num_configs)
|
||||
{
|
||||
printf("failed to choose a config");
|
||||
goto err4;
|
||||
}
|
||||
|
||||
render->context = eglCreateContext(dpy, config, EGL_NO_CONTEXT, NULL);
|
||||
if (!context)
|
||||
{
|
||||
printf("failed to create context");
|
||||
goto err4;
|
||||
};
|
||||
|
||||
if (!eglMakeCurrent(dpy, EGL_NO_SURFACE, EGL_NO_SURFACE, render->context))
|
||||
{
|
||||
printf("failed to make window current");
|
||||
goto err5;
|
||||
};
|
||||
|
||||
render->screen = px_create_image(dpy,context,fb.width,fb.height,
|
||||
fb.pitch,fb.name);
|
||||
if(render->screen == EGL_NO_IMAGE_KHR)
|
||||
goto err6;
|
||||
|
||||
glGenTextures(1, &render->tx_screen);
|
||||
if(glGetError() != GL_NO_ERROR)
|
||||
goto err6;
|
||||
|
||||
glBindTexture(GL_TEXTURE_2D, render->tx_screen);
|
||||
if(glGetError() != GL_NO_ERROR)
|
||||
goto err7;
|
||||
|
||||
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_NEAREST);
|
||||
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_NEAREST);
|
||||
glEGLImageTargetTexture2DOES(GL_TEXTURE_2D,render->screen);
|
||||
if(glGetError() != GL_NO_ERROR)
|
||||
goto err7;
|
||||
|
||||
glBindTexture(GL_TEXTURE_2D, 0);
|
||||
|
||||
glGenFramebuffers(1, &render->framebuffer);
|
||||
if(glGetError() != GL_NO_ERROR)
|
||||
goto err8;
|
||||
|
||||
glBindFramebuffer(GL_FRAMEBUFFER, render->framebuffer);
|
||||
if(glGetError() != GL_NO_ERROR)
|
||||
goto err9;
|
||||
|
||||
glFramebufferTexture2D(GL_FRAMEBUFFER,GL_COLOR_ATTACHMENT0,
|
||||
GL_TEXTURE_2D, render->tx_screen,0);
|
||||
|
||||
status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
|
||||
if (status != GL_FRAMEBUFFER_COMPLETE)
|
||||
{
|
||||
const char *str;
|
||||
switch (status)
|
||||
{
|
||||
case GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT:
|
||||
str = "incomplete attachment";
|
||||
break;
|
||||
case GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT:
|
||||
str = "incomplete/missing attachment";
|
||||
break;
|
||||
case GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER:
|
||||
str = "incomplete draw buffer";
|
||||
break;
|
||||
case GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER:
|
||||
str = "incomplete read buffer";
|
||||
break;
|
||||
case GL_FRAMEBUFFER_UNSUPPORTED:
|
||||
str = "unsupported";
|
||||
break;
|
||||
case GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE:
|
||||
str = "incomplete multiple";
|
||||
break;
|
||||
default:
|
||||
str = "unknown error";
|
||||
break;
|
||||
}
|
||||
printf("destination is framebuffer incomplete: %s [%#x]\n", str, status);
|
||||
goto err9;
|
||||
}
|
||||
|
||||
render->blit_prog = glCreateProgram();
|
||||
if(render->blit_prog == 0)
|
||||
goto err9;
|
||||
|
||||
vs_shader = create_shader(GL_VERTEX_SHADER,vs_src);
|
||||
if(vs_shader == 0)
|
||||
goto err10;
|
||||
|
||||
fs_shader = create_shader(GL_FRAGMENT_SHADER, fs_src);
|
||||
if(fs_shader == 0)
|
||||
goto err11;
|
||||
|
||||
glAttachShader(render->blit_prog, vs_shader);
|
||||
glAttachShader(render->blit_prog, fs_shader);
|
||||
glBindAttribLocation(render->blit_prog, 0, "v_position");
|
||||
glBindAttribLocation(render->blit_prog, 1, "v_texcoord0");
|
||||
glLinkProgram(render->blit_prog);
|
||||
|
||||
glGetProgramiv(render->blit_prog, GL_LINK_STATUS, &ret);
|
||||
if (!ret)
|
||||
{
|
||||
GLchar *info;
|
||||
GLint size;
|
||||
|
||||
glGetProgramiv(render->blit_prog, GL_INFO_LOG_LENGTH, &size);
|
||||
info = malloc(size);
|
||||
|
||||
glGetProgramInfoLog(render->blit_prog, size, NULL, info);
|
||||
printf("Failed to link: %s\n", info);
|
||||
printf("GLSL link failure\n");
|
||||
free(info);
|
||||
}
|
||||
|
||||
render->sampler = glGetUniformLocation(render->blit_prog,"sampler");
|
||||
|
||||
eglMakeCurrent(dpy, surface, surface, context);
|
||||
|
||||
return render;
|
||||
|
||||
err11:
|
||||
glDeleteShader(vs_shader);
|
||||
err10:
|
||||
glDeleteProgram(render->blit_prog);
|
||||
err9:
|
||||
glDeleteFramebuffers(1, &render->framebuffer);
|
||||
err8:
|
||||
eglDestroyImageKHR(dpy, render->screen);
|
||||
err7:
|
||||
glDeleteTextures(1, &render->tx_screen);
|
||||
err6:
|
||||
eglMakeCurrent(dpy, surface, surface, context);
|
||||
err5:
|
||||
eglDestroyContext(dpy, render->context);
|
||||
err4:
|
||||
glDeleteTextures(2, render->tx_buffers);
|
||||
err3:
|
||||
eglDestroyImageKHR(dpy, render->back);
|
||||
err2:
|
||||
eglDestroyImageKHR(dpy, render->front);
|
||||
err1:
|
||||
free(render);
|
||||
err:
|
||||
return NULL;
|
||||
};
|
||||
|
||||
void render_swap_buffers(struct render *render, int x, int y, int w, int h)
|
||||
{
|
||||
EGLContext context;
|
||||
EGLSurface draw, read;
|
||||
|
||||
float dst_xscale, dst_yscale;
|
||||
float *vertices = render->vertices;
|
||||
float *texcoords = render->texcoords;
|
||||
int r, b;
|
||||
|
||||
if(render == NULL)
|
||||
return;
|
||||
|
||||
context = eglGetCurrentContext();
|
||||
draw = eglGetCurrentSurface(EGL_DRAW);
|
||||
read = eglGetCurrentSurface(EGL_READ);
|
||||
|
||||
eglSwapBuffers(render->dpy,draw);
|
||||
|
||||
if (!eglMakeCurrent(render->dpy, EGL_NO_SURFACE, EGL_NO_SURFACE, render->context))
|
||||
{
|
||||
printf("failed to make window current");
|
||||
goto err1;
|
||||
};
|
||||
|
||||
glUseProgram(render->blit_prog);
|
||||
glUniform1i(render->sampler, 0);
|
||||
|
||||
glVertexAttribPointer(0, 2, GL_FLOAT,GL_FALSE, 2 * sizeof(float),render->vertices);
|
||||
glEnableVertexAttribArray(0);
|
||||
|
||||
glActiveTexture(GL_TEXTURE0);
|
||||
glBindTexture(GL_TEXTURE_2D, render->tx_buffers[render->back_buffer]);
|
||||
glTexParameteri(GL_TEXTURE_2D,
|
||||
GL_TEXTURE_MIN_FILTER,
|
||||
GL_NEAREST);
|
||||
glTexParameteri(GL_TEXTURE_2D,
|
||||
GL_TEXTURE_MAG_FILTER,
|
||||
GL_NEAREST);
|
||||
|
||||
glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 2 * sizeof(float),render->texcoords);
|
||||
glEnableVertexAttribArray(1);
|
||||
|
||||
dst_xscale = 1.0/1024;
|
||||
dst_yscale = 1.0/768;
|
||||
|
||||
r = x+w-1;
|
||||
b = y+h-1;
|
||||
|
||||
float t0, t1, t2, t5;
|
||||
|
||||
vertices[0] = t0 = 2*x*dst_xscale - 1.0;
|
||||
vertices[1 * 2] = t2 = 2*r*dst_xscale - 1.0;
|
||||
|
||||
vertices[2 * 2] = t2;
|
||||
vertices[3 * 2] = t0;
|
||||
|
||||
vertices[1] = t1 = 2*y*dst_yscale - 1.0;
|
||||
vertices[2*2+1] = t5 = 2*b*dst_yscale - 1.0;
|
||||
vertices[1*2+1] = t1;
|
||||
vertices[3*2+1] = t5;
|
||||
|
||||
texcoords[0] = 0.0;
|
||||
texcoords[1] = 0.0;
|
||||
texcoords[1*2] = 1.0;
|
||||
texcoords[1*2+1]= 0.0;
|
||||
texcoords[2*2] = 1.0;
|
||||
texcoords[2*2+1]= 1.0;
|
||||
texcoords[3*2] = 0.0;
|
||||
texcoords[3*2+1]= 1.0;
|
||||
|
||||
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
|
||||
|
||||
glDisableVertexAttribArray(0);
|
||||
glDisableVertexAttribArray(1);
|
||||
glDisable(GL_TEXTURE_2D);
|
||||
glUseProgram(0);
|
||||
|
||||
render->back_buffer++;
|
||||
render->back_buffer&=1;
|
||||
|
||||
err1:
|
||||
eglMakeCurrent(render->dpy, draw, read, context);
|
||||
}
|
||||
|
||||
#if 0
|
||||
GLuint create_framebuffer(int width, int height, GLuint *tex)
|
||||
{
|
||||
GLuint buffer;
|
||||
@ -423,3 +607,4 @@ GLuint create_framebuffer(int width, int height, GLuint *tex)
|
||||
GL_TEXTURE_2D, *tex,0);
|
||||
return buffer;
|
||||
}
|
||||
#endif
|
||||
|
||||
Loading…
Reference in New Issue
Block a user